Maybe this is related: http://lists.infradead.org/pipermail/linux-mediatek/2016-August/006638.html
thermal-block in dts is existing,but how to read the values?
It seems that also a driver must be activated in kernel (mtk_thermal):
http://elixir.free-electrons.com/linux/v4.14.6/source/drivers/thermal/Makefile
added module MTK_TERMAL, but no successā¦
root@bpi-r2:~# modprobe mtk-thermal
root@bpi-r2:~# lsmod
Module Size Used by
i2c_dev 20480 0
mt76x2e 61440 0
mt76 32768 1 mt76x2e
mtk_thermal 16384 0
thermal_sys 61440 1 mtk_thermal
pwm_mediatek 16384 0
ip_tables 24576 0
x_tables 28672 1 ip_tables
ipv6 409600 18
root@bpi-r2:~# sensors-detect
# sensors-detect revision 6284 (2015-05-31 14:00:33 +0200)
# Kernel: 4.14.11-00002-ga352d6b armv7l
# Processor: ARMv7 Processor rev 3 (v7l) (//)
This program will help you determine which kernel modules you need
to load to use lm_sensors most effectively. It is generally safe
and recommended to accept the default answers to all questions,
unless you know what you're doing.
Some south bridges, CPUs or memory controllers contain embedded sensors.
Do you want to scan for them? This is totally safe. (YES/no):
modprobe: FATAL: Module cpuid not found in directory /lib/modules/4.14.11-00002b
Failed to load module cpuid.
Silicon Integrated Systems SIS5595... No
VIA VT82C686 Integrated Sensors... No
VIA VT8231 Integrated Sensors... No
AMD K8 thermal sensors... No
AMD Family 10h thermal sensors... No
AMD Family 11h thermal sensors... No
AMD Family 12h and 14h thermal sensors... No
AMD Family 15h thermal sensors... No
AMD Family 16h thermal sensors... No
AMD Family 15h power sensors... No
AMD Family 16h power sensors... No
Intel digital thermal sensor... No
Intel AMB FB-DIMM thermal sensor... No
Intel 5500/5520/X58 thermal sensor... No
VIA C7 thermal sensor... No
VIA Nano thermal sensor... No
Lastly, we can probe the I2C/SMBus adapters for connected hardware
monitoring devices. This is the most risky part, and while it works
reasonably well on most systems, it has been reported to cause trouble
on some systems.
iāve found no config-option for CPUID, only CPUIDLE for different platformsā¦
searched also through sysfs and tried that which seems also not correct:
root@bpi-r2:~# cat /sys/class/thermal/thermal_zone0/temp
0
maybe it needs this:
Symbol: CPU_THERMAL [=n]
Prompt: generic cpu cooling support
?
any Idea how to read out CPU-Temp?
had included and loaded now thermal_sys, mtk_thermal and mt6577_auxadc but sensors-detect does not find anything
anyone knows how to get at least the CPU-Temp?
Any success to read CPU temp?
On kernel 4.9, i can retrieved temp value, not sure the value is valid neither the unit. I have mtk_thermal and thermal_sys modules loaded.
# lsmod | grep ther
mtk_thermal 5385 0
thermal_sys 53003 1 mtk_thermal
# cat /sys/class/thermal/thermal_zone0/*temp
56934
47000
67000
87000
107000
cat *temp in that dir is not the right way:
see here:
[17:59] root@bpi-r2:~# cat /sys/class/thermal/thermal_zone0/*temp
cat: /sys/class/thermal/thermal_zone0/temp: Invalid argument
47000
67000
87000
107000
[18:00] root@bpi-r2:~# ls /sys/class/thermal/thermal_zone0/
available_policies offset trip_point_0_hyst trip_point_2_temp
integral_cutoff policy trip_point_0_temp trip_point_2_type
k_d power trip_point_0_type trip_point_3_hyst
k_i slope trip_point_1_hyst trip_point_3_temp
k_po subsystem trip_point_1_temp trip_point_3_type
k_pu sustainable_power trip_point_1_type type
mode temp trip_point_2_hyst uevent
first you donāt know which āfileā do you cat, second there are not only temperature-sensors there
kernel i used: 4.14.44-main
I take the same example as you in a previous post.
# cat /sys/class/thermal/thermal_zone0/temp
56465
can you compare dts(i) and (def)config between 4.9 and 4.14?
thermal-node and auxadc
I can retrieved a value, not sure the value is valid neither of the unit. If it is degrees Celsius it is high.
$ grep -i thermal .config | grep -v '#'
CONFIG_THERMAL=m
CONFIG_THERMAL_OF=y
CONFIG_THERMAL_DEFAULT_GOV_STEP_WISE=y
CONFIG_THERMAL_GOV_STEP_WISE=y
CONFIG_MTK_THERMAL=m
The thermal zone are describe in the arch/arm/boot/dts/mt7623.dtsi
Seems like Module i2c-dev and cpuid are need. sensors-detect is unable to find any sensors.
It is milli (1/1000) degrees celciusā¦
Cpuid is not available on arm-systems, i have tried with i2c-dev too, but no success
config is (nearly) same im 4.14:
$ grep -i thermal .config | grep -v '#'
CONFIG_THERMAL=m
CONFIG_THERMAL_EMERGENCY_POWEROFF_DELAY_MS=0
CONFIG_THERMAL_OF=y
CONFIG_THERMAL_DEFAULT_GOV_STEP_WISE=y
CONFIG_THERMAL_GOV_STEP_WISE=y
CONFIG_MTK_THERMAL=m
@linkerosa have you an idea whats the Problem?
mtk-thermal is read by on-chip auxadc, not by i2c bus.
i had included auxadc as well
grep 'AUX' .config
# CONFIG_USB_SERIAL_QCAUX is not set
# CONFIG_AUXDISPLAY is not set
CONFIG_MEDIATEK_MT6577_AUXADC=m
and of course loaded the module:
[09:36] root@bpi-r2:~# lsmod
Module Size Used by
bridge 151552 0
spi_mt65xx 20480 0
mt6577_auxadc 16384 0
mtk_thermal 16384 0
thermal_sys 61440 1 mtk_thermal
pwm_mediatek 16384 0
fuse 102400 1
ipv6 413696 33 bridge
but still:
[09:38] root@bpi-r2:~# cat /sys/class/thermal/thermal_zone0/temp
cat: /sys/class/thermal/thermal_zone0/temp: Invalid argument
@linkerosa can you please look whats missing/wrong?
Hi, Frank. As I see itās everyting works in 4.16 kernel
bpi-r2-gentoo /dev # cat /sys/class/thermal/thermal_zone0/temp
46968Welcome to Ubuntu 18.04 LTS (GNU/Linux 4.16.14-bpi-r2-main armv7l)
root@bpi-r2-ubuntu:~# cat /sys/class/thermal/thermal_zone0/temp
29732
can confirm it works with 4.16ā¦so it seems to be a problem in 4.14 (same system):
Welcome to Ubuntu 18.04 LTS (GNU/Linux 4.14.48-bpi-r2-main armv7l)
root@bpi-r2-ubuntu:~# cat /sys/class/thermal/thermal_zone0/temp
cat: /sys/class/thermal/thermal_zone0/temp: Invalid argumentCONFIG_MTK_EFUSE=m ?
also not set in 4.16ā¦it seems efuse is not be needed
efuse: efuse@10206000 {
compatible = "mediatek,mt7623-efuse",
"mediatek,mt8173-efuse";
reg = <0 0x10206000 0 0x1000>;
#address-cells = <1>;
#size-cells = <1>;
thermal_calibration_data: calib@424 {
reg = <0x424 0xc>;
};
};
thermal: thermal@1100b000 {
#thermal-sensor-cells = <1>;
compatible = "mediatek,mt7623-thermal",
"mediatek,mt2701-thermal";
reg = <0 0x1100b000 0 0x1000>;
interrupts = <0 70 IRQ_TYPE_LEVEL_LOW>;
clocks = <&pericfg CLK_PERI_THERM>, <&pericfg CLK_PERI_AUXADC>;
clock-names = "therm", "auxadc";
resets = <&pericfg MT2701_PERI_THERM_SW_RST>;
reset-names = "therm";
mediatek,auxadc = <&auxadc>;
mediatek,apmixedsys = <&apmixedsys>;
nvmem-cells = <&thermal_calibration_data>;
nvmem-cell-names = "calibration-data";
};i have compared thermal,efuse and auxadc-node between 4.14-main and 4.16-main, they are identical
frank@frank-N56VZ:/media/data_ext/bpi-r2-kernel/github$ git diff 4.14-main..4.16-main -- ./drivers/thermal/mtk_thermal.c
diff --git a/drivers/thermal/mtk_thermal.c b/drivers/thermal/mtk_thermal.c
index 1e61c09153c9..c75661a3801a 100644
--- a/drivers/thermal/mtk_thermal.c
+++ b/drivers/thermal/mtk_thermal.c
@@ -32,15 +32,10 @@
#include <linux/types.h>
/* AUXADC Registers */
-#define AUXADC_CON0_V 0x000
-#define AUXADC_CON1_V 0x004
#define AUXADC_CON1_SET_V 0x008
#define AUXADC_CON1_CLR_V 0x00c
#define AUXADC_CON2_V 0x010
#define AUXADC_DATA(channel) (0x14 + (channel) * 4)
-#define AUXADC_MISC_V 0x094
-
-#define AUXADC_CON1_CHANNEL(x) BIT(x)
#define APMIXED_SYS_TS_CON1 0x604
@@ -158,8 +153,6 @@
/* The number of sensing points per bank */
#define MT2712_NUM_SENSORS_PER_ZONE 4
-#define THERMAL_NAME "mtk-thermal"
-
struct mtk_thermal;
struct thermal_bank_cfg {
@@ -765,7 +758,7 @@ static struct platform_driver mtk_thermal_driver = {
.probe = mtk_thermal_probe,
.remove = mtk_thermal_remove,
.driver = {
- .name = THERMAL_NAME,
+ .name = "mtk-thermal",
.of_match_table = mtk_thermal_of_match,
},
};
frank@frank-N56VZ:/media/data_ext/bpi-r2-kernel/github$ git diff 4.14-main..4.16-main -- ./drivers/iio/adc/mt6577_auxadc.c
diff --git a/drivers/iio/adc/mt6577_auxadc.c b/drivers/iio/adc/mt6577_auxadc.c
index 414cf44bf19d..95d76abb64ec 100644
--- a/drivers/iio/adc/mt6577_auxadc.c
+++ b/drivers/iio/adc/mt6577_auxadc.c
@@ -180,7 +180,6 @@ static int mt6577_auxadc_read_raw(struct iio_dev *indio_dev,
}
static const struct iio_info mt6577_auxadc_info = {
- .driver_module = THIS_MODULE,
.read_raw = &mt6577_auxadc_read_raw,
};
@@ -306,6 +305,7 @@ static SIMPLE_DEV_PM_OPS(mt6577_auxadc_pm_ops,
static const struct of_device_id mt6577_auxadc_of_match[] = {
{ .compatible = "mediatek,mt2701-auxadc", },
+ { .compatible = "mediatek,mt2712-auxadc", },
{ .compatible = "mediatek,mt7622-auxadc", },
{ .compatible = "mediatek,mt8173-auxadc", },
{ }
frank@frank-N56VZ:/media/data_ext/bpi-r2-kernel/github$